Add lumakey_opencl filter. Behaves like existing lumakey filter.
---
configure | 1 +
libavfilter/Makefile | 2 +
libavfilter/allfilters.c | 1 +
libavfilter/opencl/lumakey.cl | 43 +++++++
libavfilter/opencl_source.h | 1 +
libavfilter/vf_lumakey_opencl.c | 243 ++++++++++++++++++++++++++++++++++++++++
6 files changed, 291 insertions(+)
create mode 100644 libavfilter/opencl/lumakey.cl
create mode 100644 libavfilter/vf_lumakey_opencl.c
diff --git a/configure b/configure
index 5783407..9816ebb 100755
--- a/configure
+++ b/configure
@@ -3356,6 +3356,7 @@ interlace_filter_deps="gpl"
kerndeint_filter_deps="gpl"
ladspa_filter_deps="ladspa libdl"
lensfun_filter_deps="liblensfun version3"
+lumakey_opencl_filter_deps="opencl"
lv2_filter_deps="lv2"
mcdeint_filter_deps="avcodec gpl"
movie_filter_deps="avcodec avformat"
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 5d4549e..2a01bf3 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -253,6 +253,8 @@ OBJS-$(CONFIG_LIBVMAF_FILTER) +=
vf_libvmaf.o framesync.o
OBJS-$(CONFIG_LIMITER_FILTER) += vf_limiter.o
OBJS-$(CONFIG_LOOP_FILTER) += f_loop.o
OBJS-$(CONFIG_LUMAKEY_FILTER) += vf_lumakey.o
+OBJS-$(CONFIG_LUMAKEY_OPENCL_FILTER) += vf_lumakey_opencl.o opencl.o \
+ opencl/lumakey.o
OBJS-$(CONFIG_LUT_FILTER) += vf_lut.o
OBJS-$(CONFIG_LUT2_FILTER) += vf_lut2.o framesync.o
OBJS-$(CONFIG_LUT3D_FILTER) += vf_lut3d.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 521bc53..065ad9f 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -242,6 +242,7 @@ extern AVFilter ff_vf_libvmaf;
extern AVFilter ff_vf_limiter;
extern AVFilter ff_vf_loop;
extern AVFilter ff_vf_lumakey;
+extern AVFilter ff_vf_lumakey_opencl;
extern AVFilter ff_vf_lut;
extern AVFilter ff_vf_lut2;
extern AVFilter ff_vf_lut3d;
diff --git a/libavfilter/opencl/lumakey.cl b/libavfilter/opencl/lumakey.cl
new file mode 100644
index 0000000..dbee63e
--- /dev/null
+++ b/libavfilter/opencl/lumakey.cl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2018 Danil Iashchenko
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+__kernel void lumakey_global(__write_only image2d_t dstAlpha,
+ __read_only image2d_t srcLuma,
+ float w,
+ float b,
+ int so)
+{
+ const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
+ CLK_ADDRESS_CLAMP_TO_EDGE |
+ CLK_FILTER_NEAREST);
+
+ int2 loc = (int2)(get_global_id(0), get_global_id(1));
+ float4 lumaPix = read_imagef(srcLuma, sampler, loc) * 255;
+
+ if (lumaPix.x >= b && lumaPix.x <= w) {
+ write_imagef(dstAlpha, loc, (float4)(0.0f));
+ } else if (lumaPix.x > b - so && lumaPix.x < w + so) {
+ if (lumaPix.x < b) {
+ write_imagef(dstAlpha, loc, (float4)((1 - (lumaPix.x - b + so) /
so)));
+ } else {
+ write_imagef(dstAlpha, loc, (float4)(((lumaPix.x - w) / so)));
+ }
+ }
+}
diff --git a/libavfilter/opencl_source.h b/libavfilter/opencl_source.h
index de4e66e..dba701e 100644
--- a/libavfilter/opencl_source.h
+++ b/libavfilter/opencl_source.h
@@ -22,6 +22,7 @@
extern const char *ff_opencl_source_avgblur;
extern const char *ff_opencl_source_colorspace_common;
extern const char *ff_opencl_source_convolution;
+extern const char *ff_opencl_source_lumakey;
extern const char *ff_opencl_source_overlay;
extern const char *ff_opencl_source_tonemap;
extern const char *ff_opencl_source_unsharp;
diff --git a/libavfilter/vf_lumakey_opencl.c b/libavfilter/vf_lumakey_opencl.c
new file mode 100644
index 0000000..8879a88
--- /dev/null
+++ b/libavfilter/vf_lumakey_opencl.c
@@ -0,0 +1,243 @@
+/*
+ * Copyright (c) 2018 Danil Iashchenko
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/common.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/opt.h"
+
+
+#include "avfilter.h"
+#include "internal.h"
+#include "opencl.h"
+#include "opencl_source.h"
+#include "video.h"
+
+typedef struct LumakeyOpenCLContext {
+ OpenCLFilterContext ocf;
+
+ int initialised;
+ cl_kernel kernel;
+ cl_command_queue command_queue;
+
+ cl_int threshold;
+ cl_int tolerance;
+ cl_int softness;
+
+ cl_float black;
+ cl_float white;
+
+} LumakeyOpenCLContext;
+
+static int lumakey_opencl_init(AVFilterContext *avctx)
+{
+ LumakeyOpenCLContext *ctx = avctx->priv;
+ cl_int cle;
+ int err;
+
+ err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_lumakey, 1);
+ if (err < 0)
+ goto fail;
+
+ ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
+ ctx->ocf.hwctx->device_id,
+ 0, &cle);
+ CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
+ "command queue %d.\n", cle);
+
+ ctx->kernel = clCreateKernel(ctx->ocf.program, "lumakey_global", &cle);
+ CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
+ "kernel %d.\n", cle);
+
+ ctx->initialised = 1;
+ return 0;
+
+fail:
+ if (ctx->command_queue)
+ clReleaseCommandQueue(ctx->command_queue);
+ if (ctx->kernel)
+ clReleaseKernel(ctx->kernel);
+ return err;
+}
+
+
+static int lumakey_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
+{
+ AVFilterContext *avctx = inlink->dst;
+ AVFilterLink *outlink = avctx->outputs[0];
+ LumakeyOpenCLContext *ctx = avctx->priv;
+ AVFrame *output = NULL;
+ cl_int cle;
+ size_t global_work[2];
+ cl_mem src, dst;
+ int err, i;
+ size_t origin[3] = {0, 0, 0};
+ size_t region[3] = {0, 0, 1};
+
+ av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
+ av_get_pix_fmt_name(input->format),
+ input->width, input->height, input->pts);
+
+ if (!input->hw_frames_ctx)
+ return AVERROR(EINVAL);
+
+ if (!ctx->initialised) {
+ err = lumakey_opencl_init(avctx);
+ if (err < 0)
+ goto fail;
+
+ ctx->white = ctx->threshold + ctx->tolerance;
+ ctx->black = ctx->threshold - ctx->tolerance;
+ }
+
+ output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!output) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ for (i = 0; i < FF_ARRAY_ELEMS(output->data) - 1; i++) {
+ src = (cl_mem) input->data[i];
+ dst = (cl_mem)output->data[i];
+
+ if (!dst)
+ break;
+
+ err = ff_opencl_filter_work_size_from_image(avctx, region, output, i,
0);
+ if (err < 0)
+ goto fail;
+
+ cle = clEnqueueCopyImage(ctx->command_queue, src, dst,
+ origin, origin, region, 0, NULL, NULL);
+ CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to copy plane %d: %d.\n",
+ i, cle);
+ }
+
+ src = (cl_mem) input->data[0];
+ dst = (cl_mem)output->data[3];
+
+ CL_SET_KERNEL_ARG(ctx->kernel, 0, cl_mem, &dst);
+ CL_SET_KERNEL_ARG(ctx->kernel, 1, cl_mem, &src);
+ CL_SET_KERNEL_ARG(ctx->kernel, 2, cl_float, &ctx->white);
+ CL_SET_KERNEL_ARG(ctx->kernel, 3, cl_float, &ctx->black);
+ CL_SET_KERNEL_ARG(ctx->kernel, 4, cl_int, &ctx->softness);
+
+ err = ff_opencl_filter_work_size_from_image(avctx, global_work, output, 0,
0);
+ if (err < 0)
+ goto fail;
+
+ av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d"
+ "(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
+ 0, global_work[0], global_work[1]);
+
+ cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
+ global_work, NULL,
+ 0, NULL, NULL);
+ CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue "
+ "kernel: %d.\n", cle);
+
+
+ cle = clFinish(ctx->command_queue);
+ CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n",
cle);
+
+ err = av_frame_copy_props(output, input);
+ if (err < 0)
+ goto fail;
+
+ av_frame_free(&input);
+
+ av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
+ av_get_pix_fmt_name(output->format),
+ output->width, output->height, output->pts);
+
+ return ff_filter_frame(outlink, output);
+
+fail:
+ clFinish(ctx->command_queue);
+ av_frame_free(&input);
+ av_frame_free(&output);
+ return err;
+}
+
+
+static av_cold void lumakey_opencl_uninit(AVFilterContext *avctx)
+{
+ LumakeyOpenCLContext *ctx = avctx->priv;
+ cl_int cle;
+
+ if (ctx->kernel) {
+ cle = clReleaseKernel(ctx->kernel);
+ if (cle != CL_SUCCESS)
+ av_log(avctx, AV_LOG_ERROR, "Failed to release "
+ "kernel: %d.\n", cle);
+ }
+
+ if (ctx->command_queue) {
+ cle = clReleaseCommandQueue(ctx->command_queue);
+ if (cle != CL_SUCCESS)
+ av_log(avctx, AV_LOG_ERROR, "Failed to release "
+ "command queue: %d.\n", cle);
+ }
+
+ ff_opencl_filter_uninit(avctx);
+}
+
+static const AVFilterPad lumakey_opencl_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = &lumakey_opencl_filter_frame,
+ .config_props = &ff_opencl_filter_config_input,
+ },
+ { NULL }
+};
+
+static const AVFilterPad lumakey_opencl_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = &ff_opencl_filter_config_output,
+ },
+ { NULL }
+};
+
+#define OFFSET(x) offsetof(LumakeyOpenCLContext, x)
+#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
+
+static const AVOption lumakey_opencl_options[] = {
+ { "threshold", "set the threshold value", OFFSET(threshold),
AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
+ { "tolerance", "set the tolerance value", OFFSET(tolerance),
AV_OPT_TYPE_INT, {.i64=1}, 0, UINT16_MAX, FLAGS },
+ { "softness", "set the softness value", OFFSET(softness),
AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(lumakey_opencl);
+
+AVFilter ff_vf_lumakey_opencl = {
+ .name = "lumakey_opencl",
+ .description = NULL_IF_CONFIG_SMALL("Apply convolution mask to input
video"),
+ .priv_size = sizeof(LumakeyOpenCLContext),
+ .priv_class = &lumakey_opencl_class,
+ .init = &ff_opencl_filter_init,
+ .uninit = &lumakey_opencl_uninit,
+ .query_formats = &ff_opencl_filter_query_formats,
+ .inputs = lumakey_opencl_inputs,
+ .outputs = lumakey_opencl_outputs,
+ .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+};
--
2.7.4
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